Wow ... that's an awful lot of work .... my brain is hurting.

For a light source I use a 10watt halogen bulb in a desk lamp about 30" above the frame and for filtration I use coloured plastic report covers above the frame. I use a digital watch for a timer.

I use this setup for both VC and AZO - they just have different exposure times and AZO doesn't need filtration

cheers